You should check out SigNoz (https://github.com/SigNoz/signoz) - It's an open source alternative to DataDog with metrics, traces and logs in a single application. You can just self host it yourself or try the hosted version. PS: I am one of the maintainers at SigNoz

thanks! That looks really interesting.

Grafana, Prometheus, Loki, tempo

Sooo nothing yet :D

We attempted to migrate from datadog to prometheus at GitHub and that stack did not cover our use case at all. So much tooling had to be recreated. I took a lot of flak when I pointed out numbers made sense to stay on DataDog and migrate to a Microsoft product instead, but the cost savings spoke for itself

Grafana isn't incentived to simplify self hosting IMO, so this is the best you can do without paying them.

That's a bit like asking for an "open source alternative to AWS."

It depends what you're looking for: metrics, logs, APM, tracing, synthetics, web analytics, etc.

metrics, APM mostly

The list of targets Micrometer posts to is a good starting point for options:

https://micrometer.io/docs